package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;


    /**
     * @Description: 员工登录
     * @Param:request
     * @Param:employee
     * @return:
     * @Author: Lei
     * @Date:
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {

        /**1. 将页面提交的密码password进行md5加密处理*/
        String password=employee.getPassword();
        password= DigestUtils.md5DigestAsHex(password.getBytes());


        /**2. 根据页面提交的用户名username查询数据库*/
        LambdaQueryWrapper<Employee> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp=employeeService.getOne(queryWrapper);

        /**3. 如果没有查询到则返回登录失败结果*/
        if (emp == null) {
            return R.error("登录失败");
        }
        /**4. 密码比对，如果不一致则返回登录失败结果*/
        if (!emp.getPassword().equals(password)) {
            return R.error("登录失败");
        }
        /**5. 查看员工状态，如果为已禁用状态，则返回员工已禁用结果*/
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }
        /**6. 登录成功，将员工id存入Session并返回登录成功结果*/
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
    * @Description: 员工退出
            * @Param: 
            * @return: 
            * @Author: Lei
            * @Date: 
     */
    
    @PostMapping("logout")
    public R<String> logout(HttpServletRequest request){
        /**清理Session中保存的当前登录员工的Id*/
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
    * @Description: 新增员工
            * @Param: 
            * @return: 
            * @Author: Lei
            * @Date: 
     */
    
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工：{}",employee.toString());


        /**设置初始密码，需要进行md5加密处理*/
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());

        /**获得当前登录用户的id*/
//        Long empId = (Long) request.getSession().getAttribute("employee");
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        employeeService.save(employee);

        return R.success("新增员工成功");
    }



    /**
    * @Description: 员工信息分页查询
            * @Param: 
            * @return: 
            * @Author: Lei
            * @Date: 
     */

    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){

        log.info("page={},pageSize={},name={}",page,pageSize,name);

        /**1.构造分页构造器*/
        Page pageinfo=new Page(page,pageSize);


        /**2.构造条件构造器*/
        LambdaQueryWrapper<Employee> lambdaQueryWrapper=new LambdaQueryWrapper();
        /**添加过滤条件*/
        lambdaQueryWrapper.like(StringUtils.hasText(name),Employee::getName,name);
        /**添加排序条件*/
        lambdaQueryWrapper.orderByDesc(Employee::getUpdateTime);


        /**3.执行查询*/
        employeeService.page(pageinfo,lambdaQueryWrapper);

        return R.success(pageinfo);
    }


    /**
    * @Description: 根据id修改员工信息
            * @Param:
            * @return:
            * @Author: Lei
            * @Date:
     */

    @PutMapping
    public R<String> updateEmployee(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());


        long id=Thread.currentThread().getId();
        log.info("线程id为:{}",id);
//        Long empId= (Long) request.getSession().getAttribute("employee");
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(empId);

        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }
    
    /**
    * @Description: 根据Id查询员工信息
            * @Param: 
            * @return: 
            * @Author: Lei
            * @Date: 
     */
    
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据ID查询员工信息");

        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");

    }
}
